Feedeick hildebbandt



' "UNITED STATES PATENT OFFICE.

FREDRIOK HILDEBRANDI OF NEW YORK, N. Y.

4PETROLEUM COOKING-STOVE.

SPECIFICATION forming part of LettersPatent No. 236,813, dated January18, 1881.

To all whom it may concern:

Be it known that I, FREDRICK HILDE- BRANDT, of the city, county, andState of New York, have invented certain new and useful Improvements inPetroleum'Cooking-Stoves, of which the following is a specification.

In the accompanying drawings, Figure 1 represents a vertical centralsection of my improved petroleum cooking-stove; and Fig. 2, a horizontalsection of the same on line w w, Fig. 1, showing aftop view of the baseor lamp.

Similar letters of reference indicate correspondin g parts.

This invention has reference to an improved petroleum cooking stovewhich is so constructed that the cylindrical top part can be readilyremoved for getting at the wick-operating ratchets or spur-wheels, whilethe base is protected against the heat of the burners by the jointaction of a water-pan and intermediate air-spaces.

The invention consists in the parts and combinations of partshereinafter described, and pointed out in the claims.

Referring to the drawings, A represents the base or lamp yportion of myimproved petroleum cooking-stove, and B the cylindrical top part of thesame, upon which the" cookingvessels are placed. The base A contains theoil-reservoir, and has a vertical partition, a.,

' at the center, by which the wicks are Aconducted to each side thereofand prevented from interfering with each other. The base portion A hasa' central opening, b, through which the wicks and wick-tubes areinserted. The top of the base A is depressed around the central opening,b, the' depressed portion d carrying a vertical flange, e, which isconcentric to the opening b, and provided with a sharpoutwardly-projecting rim` or burr, e. The depressed portion d formsaround the ange e an annular air-space. The top part, `J3, rests up.- onthe sharp rim e of the flange e by an annular scat, f, which extendsdownwardly from the bottom of the 'water-pan G, which is secured tosupporting-arms at the lower part of the top. The water-pan O has aninterior wall or partition, C', of the saline height as the outer wallof the water-pan, the partition be- 5o ing in line with the annularbottom seat, j'.

This partition is arranged at some distance Application filed March 12,1880. (Model.)

from thewick-tubes D, and serves to prevent the contact of the waterwith the wick-tubes, and the consequent corrosion of the same, whichforms one of the most objectionable features of the cooking-stoves withwater-pans at present in use. The water-pan extends around thewick-tubes, and serves mainly to prevent the heat from being transferredfrom the top part, B, to the base A. The center portion, g, of thewater-pan, inside of the partition O', is raised above the bottom of thewaterpan, to provide the required space for the ratchets or spur-wheelsh which operate the wicks of the Wick-tubes. The raised center portion,g, serves, also, for supporting the wick-tubes D, which latter areprovided with a conical vapor-tube, i, and an exit-channel, i', for theescape of the oil-vapors from the oil-reservoir to the llame, where theyare consumed. This feature has heretofore been patented to me by LettersPatent dated November 7, 187 6, and numbered 184,078.

The top part,B,rests on short side stays, l, of the base A, and issupported at such a distance therefrom that an intermediate coolingair-space is formed between the water-pan and base. Wire hooks m, at theunder side ot' the pan-bottom, enter into fixed sleeves m at the toppart of the base, while a hinged open link,

'm2, at one or both sleeves, serves to establish the reliable locking ofthe top to the base. In place of the wire hooks, sleeves, and links, abayonet-joint or any other device by which the top is locked to the basemay be used, the essential point being the detachability of the top partfrom the base part, for the purpose of getting at the ratchets andwick-tubes and repairing them without difliculty in case they should getout of order, which, in the petroleum cooking-stoves heretofore in use,was always connected with some difficulty, owing to their being entirelyincased.

As the water-pan and the intermediate airspace prevent the heat frompassing to the top part to thebase, and as the wick-tubes can heat onlythe very narrow connecting-surface between the annular bottom seat ofthe top part and the sharp rim of the base part, the base is not in theleast affected by the heat of the top part, and remains perfectly coolwithout any danger of generating explosive vapors.

IOO

The connecting parts are furthermore cooled by the annular airspaceformed around the flange by the depressed top part ot' the base, and bythe interior air-space formed ins'ide of the ange of the base and theannular seat of the top and below the raised center portion of thewater-pan.

The top part, B, is constructed above the water-pan in the usual manner,with mica doors and other accessories.

The oil-reservoir in the base A is filled by a side tube, u, whichextends down to an opening, n', in the side wall ot' the base, near thebottom thereof, the tube n being closed by a screw-cap, n2. In fillingthe reservoirtheopening n is always sealed by the oil, so that no aircan enter into the reservoir and mix with the vapors tllerein. Thevapors are forced out by the rising oil through the vapor-dischargecones and channels, so as to obviate any interior compression of thevapors and any possible danger of explosion therefrom. Thedischargccones and vapor-channels work thus, in connection with thefilling,r tube and oritice, as a reliable safety device for theoil-reservoir.

The top can be readily detached from the base by disconnecting.,r thelocking devices, the lower part being kept cool, even without n'llingthe water-pan, by the circulation of air in the intermediate airspaces,which circulation is really sutjcient for all practical purposes, thoughit is preferable to keep the water-pan properly filled with water as anadditional safety device.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. In a petroleum cooking-stove, a waterpan locatedat the base ot the top part and above the oil-reservoir, said water-panheilig open at the top, and having a closed bottom formed with theraised portion g, for the purpose described, and arranged to carry thewicktuhes, in combination with the oil-reservoir and with mechanismwhereby the top part and waterpan can be locked to or removed from theoil-reservoir, substantially as set forth.

2. In a petroleum cooking-stove, the water pan C, located at the bottomof the top part, B, and provided with a closed bottom having the raisedportion g, xed wick-tube D, and an inner wall or partition, C',inclosing the wick-tubes, to prevent the contact of water therewith, andthe annular flange f, seated upon the base, as specified.

3. In a petroleum cooking-stove, the waterpan C, located at the base ofthe top part, B, and provided with a closed bottom having an interiorwall or partition, C', xed wick-tubes D, and a raised center portion, g,within the partition, to provide space for the wick-ratchets,substantially as shown and described.

4. In a petroleum cooking-stove, the combination ofthe base A, havingthe annular depression d and a rimmed flange, e e', with the top part,B, havin g a bottom water-pan, U, provided with the raised portion g,and which rests by an annular bottom seat, f, upon the rimmed flange,substantially as set forth.

5. In a petroleum cooking-stove, the base A, having a rimmed iiange, ee', and an annular depression. d, around said flange, for the purposedescribed.

In testimony that I claim the foregoing as my invention I have signed myname, in presence of two witnesses, this 24th day of February, 1880.

FREDRICK HILDEBRANDT.

Witnesses:

PAUL GoEPEL, ADOLPH DENGLER.

